Conciseness

The body is mostly efficient — compact tables for the document tiers, terse numbered checks, a citation format block, and a checklist — but the motivational paragraph ("A document set without citations drifts: the same constraint gets restated in multiple places, and when the source changes, the restatements don't...") explains why the task matters rather than how to do it and could be trimmed. Not a 5 because this rationale paragraph is a minor instance of over-explanation; not a 3 because nothing is padded and no concepts Claude already knows are re-taught.

Actionability

As an instruction-only skill the guidance is fully executable: exact citation formats to copy ("(see docs/constitution.md, Principle N)", "(see docs/architecture/decisions/[file].md, [section])"), exact file paths per document, and concrete decision rules with edge-case handling ("if the statement is a close paraphrase rather than an exact match, verify the intent before citing", "retain it in the most specific document... and replace the duplicate with a pointer").

Workflow Clarity

The workflow is clearly sequenced — "Read all existing documents from both tiers. For each derivative document, apply these checks in order" with four ordered checks — and this batch operation over multiple documents has explicit validation: the "Before finishing, verify:" checklist, plus error-recovery guidance ("flag it to the developer rather than guessing", "Do not silently correct — the developer needs to know") and a stop condition for missing constitution/glossary. The destructive/batch cap does not apply because validation is present.

Progressive Disclosure

The skill is self-contained with well-organized sections, two scannable tables, and no inlined bulk content that belongs in separate files, and the fallback section handles absent documents cleanly. It scores 4 rather than 5 because at ~90 lines it exceeds the under-50-line self-contained threshold, and the document-tier tables are the kind of reference data that could be offloaded to a bundle file if the document set grows.

Specificity

The description lists multiple concrete actions — "add missing citations, replace stale duplicate facts with pointers, and correct contradictions" — and enumerates the exact document types in both tiers ("constitution, context, glossary, requirements"; "architecture decisions, architecture overview, MVP architecture spec, vision, implementation heuristics"), giving comprehensive coverage rather than minor gaps.

Completeness

It explicitly answers both questions: the "what" is concrete ("Scans all authoritative documents... to add missing citations, replace stale duplicate facts with pointers, and correct contradictions") and the "when" gives three concrete trigger conditions. Not a 4 because the when-clause is fully explicit with multiple specific triggers, matching the anchor-5 example pattern.

Trigger Term Quality

Natural trigger phrases are present ("whenever a document has been written or revised", "whenever you suspect a constraint in one document is not reflected in another", "flagged a conflict") plus keywords like citations, contradictions, and stale facts. A few natural synonyms users might say — e.g. "cross-reference", "consistency", "documentation drift" — are absent, so it falls just short of comprehensive.

Distinctiveness Conflict Risk

It occupies a clear niche — citation/consistency syncing across a specific project document set (constitution, glossary, requirements, architecture decisions) — with trigger conditions distinct from generic documentation skills, so conflict risk is minimal.